A comparison of the effects of physical and chemical mutagens in sesame (Sesamum indicum L.)

Three sesame genotypes (Rama, SI 1666 and IC 21706) were treated with physical (γ-rays: 200 Gy, 400 Gy or 600 Gy) or chemical (ethyl methane sulphonate, EMS: 0.5%, 1.0%, 1.5% or 2.0%) mutagens and their mutagenic effectiveness and efficiency were estimated in the M 2 generation. The M 3 generation was used to identify the most effective mutagen and dose for induction of mutations. The average effectiveness of EMS was much higher than γ-rays. The lowest dose of γ-rays (200 Gy) and the lowest concentration of EMS (0.5%) showed the highest mutagenic efficiency in all genotypes. Analysis of the M 3 generation data based on parameters such as the variance ratio and the difference in residual variances derived from the model of Montalván and Ando indicated that 0.5% concentration of EMS was the most effective treatment for inducing mutations

The coupling of vision with locomotion in cortical blindness

© 2014 Elsevier B.V.. Maintaining or modifying the speed and direction of locomotion requires the coupling of the locomotion with the retinal optic flow that it generates. It is shown that this essential behavioral capability, which requires on-line neural control, is preserved in the cortically blind hemifield of a hemianope. In experiments, optic flow stimuli were presented to either the normal or blind hemifield while the patient was walking on a treadmill. Little difference was found between the hemifields with respect to the coupling (i.e. co-dependency) of optic flow detection with locomotion. Even in the cortically blind hemifield, faster walking resulted in the perceptual slowing of detected optic flow, and self-selected locomotion speeds demonstrated behavioral discrimination between different optic flow speeds. The results indicate that the processing of optic flow, and thereby on-line visuo-locomotor coupling, can take place along neural pathways that function without processing in Area V1, and thus in the absence of conscious intervention. These and earlier findings suggest that optic flow and object motion are processed in parallel along with correlated non-visual locomotion signals. Extrastriate interactions may be responsible for discounting the optical effects of locomotion on the perceived direction of object motion, and maintaining visually guided self-motion

Accessing new taxation revenue: evaluating policy alternatives for British Columbia\u27s cities

This study explores how British Columbia can provide more financial autonomy to its cities by granting them access to more diverse taxation revenue sources. Three types of taxes are considered as policy alternatives: a municipal general sales tax, a municipal personal income tax and a municipal corporate income tax. Several implementation methodologies are also evaluated: tax rate setting authority, tax collection and tax revenue distribution. The evaluation relies on key informant interviews, case studies of U.S. cities that have already implemented the cited taxes and a review of previous literature. This study recommends that granting cities access to a local sales tax is the most practical first step in providing cities with more financial autonomy. However, access to a more diversified set of taxes, including corporate and personal income taxes, should be considered as next steps in granting city governments more flexibility to diversify their revenue sources

A Sermon Group in \u3cem\u3eThe Canterbury Tales\u3c/em\u3e

The religious nature of various tales that comprise Chaucer\u27s Canterbury Tales is a matter that has long been recognized, The purpose of the pilgrimage to Canterbury is a religious purpose, It is only natural that such a wide collection of representatives of the religious profession should be present and quite likely that medieval controversies in religious practice should arise. The tales of the Friar and Summoner, the Prioress and the Second Nun, the Pardoner and Monk, and the Nun\u27s Priest and the Parson all contain an expressed concern with the medieval theme of man\u27s relationship with God, can all be linked by various parallels in theme and method of presentation, an taken as a group demonstrate the medieval variety of opinion with regard to moral instruction and the proper way to get to heaven. It is appropriate that Chaucer presents such a wide variety of representatives of the religious orders, that each representative has his own individual characteristics , that the Friar and the Summoner, the Prioress and Nun, the Pardoner and Monk, and the Priest and the Parson are depicted in actual practice of their assigned duties. As the telling of the tales progress, two major questions arise: (1) what is the proper way for man to approach getting to heaven and (2) what is the proper way to go about moral instruction. Evidence from the relationships that exist between medieval guides and texts for the method of preaching sermons and the purpose and method of the sermon tales themselves and from the continual debate over tale-telling and moral instruction bear out a heavy emphasis on the concerns of medieval sermon and homily

Reconnect With Your Alumni And Connect To Donors

At the University of Central Florida, the Special Collections and University Archives work hand in hand with the Library Development office to create lasting relationships with donors. University Archives staff began attending alumni events in 2005 to create publicity for the collection and encourage donations of materials about the university. Though this publicity, the archives connected with alumni who have become advocates and participants in building a collection. Faculty, staff, and alumni volunteers have come in to the archives to identify photographs and have donated their materials to build a collection documenting the university. Exhibits highlighting the history of the university served to interest the alumni community, and exhibit events have brought new faces into the library. By creating these activities within the special collections, donors become active in the library community, and bring potential for financial gifts